edited by A.H. Robertson
Manchester University Press, 1968
Buku Teks
Smith, Rhona K., author
Routledge, 2010
Buku Teks
edited by Jeffrey F. Addicott, Md. Jahid Hossain Bhuiyan, Tareq M.R. Chowdhur
Oxford University press, 2012
Buku Teks
Forsythe, David P., 1941-, author
Cambridge University Press, 2012
Buku Teks
Samers, Michael, author
Routledge, 2017
Buku Teks